package com.itheima.controller;

import com.alibaba.dubbo.config.annotation.Reference;
import com.itheima.constant.MessageConstant;
import com.itheima.entity.Result;
import com.itheima.service.MemberService;
import com.itheima.service.ReportService;
import com.itheima.service.SetmealService;
import net.sf.jasperreports.engine.JasperCompileManager;
import net.sf.jasperreports.engine.JasperExportManager;
import net.sf.jasperreports.engine.JasperFillManager;
import net.sf.jasperreports.engine.JasperPrint;
import net.sf.jasperreports.engine.data.JRBeanCollectionDataSource;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.io.OutputStream;
import java.math.BigDecimal;
import java.text.SimpleDateFormat;
import java.util.*;

@RestController
@RequestMapping("/report")
public class ReportController {
    @Reference
    private MemberService memberService;
    @Reference
    private SetmealService setmealService;
    @Reference
    private ReportService reportService;

    /**
     * 会员数量统计
     *
     * @return
     */
    @RequestMapping("/getMemberReport")
    public Result getMemberReport() {
        Calendar calendar = Calendar.getInstance();
        calendar.add(Calendar.MONTH, -12);//获得当前日期之前12个月的日期
        List<String> list = new ArrayList<>();
        for (int i = 0; i < 12; i++) {
            calendar.add(Calendar.MONTH, 1);
            list.add(new
                    SimpleDateFormat("yyyy.MM").format(calendar.getTime()));
        }
        Map<String, Object> map = new HashMap<>();
        map.put("months", list);
        List<Integer> memberCount = memberService.findMemberCountByMonth(list);
        map.put("memberCount", memberCount);
        return new Result(true,
                MessageConstant.GET_MEMBER_NUMBER_REPORT_SUCCESS, map);
    }

    @RequestMapping("/getSetmealReport")
    public Result getSetmealReport() {
        List<Map<String, Object>> list = setmealService.findSetmealCount();

        HashMap<String, Object> map = new HashMap<>();
        map.put("setmealCount", list);

        List<String> setmealNames = new ArrayList<>();
        for (Map<String, Object> m : list) {
            String name = (String) m.get("name");
            setmealNames.add(name);
        }
        map.put("setmealNames", setmealNames);

        return new Result(true, MessageConstant.GET_SETMEAL_COUNT_REPORT_SUCCESS, map);
    }

    //运营数据统计
    @RequestMapping("/getBusinessReportData")
    public Result getBusinessReportData() {
        try {
            Map<String, Object> data = reportService.getBusinessReportData();
            return new Result(true, MessageConstant.GET_BUSINESS_REPORT_SUCCESS, data);
        } catch (Exception e) {
            e.printStackTrace();
            return new Result(false, MessageConstant.GET_BUSINESS_REPORT_FAIL);
        }
    }

    //导出运营数据
    @RequestMapping("/exportBusinessReport")
    public void exportBusinessReport(HttpServletRequest req, HttpServletResponse resp) {
        try {
            Map<String, Object> result = reportService.getBusinessReportData();
            String reportDate = (String) result.get("reportDate");
            Integer todayNewMember = (Integer) result.get("todayNewMember");
            Integer totalMember = (Integer) result.get("totalMember");
            Integer thisWeekNewMember = (Integer) result.get("thisWeekNewMember");
            Integer thisMonthNewMember = (Integer) result.get("thisMonthNewMember");
            Integer todayOrderNumber = (Integer) result.get("todayOrderNumber");
            Integer thisWeekOrderNumber = (Integer) result.get("thisWeekOrderNumber");
            Integer thisMonthOrderNumber = (Integer) result.get("thisMonthOrderNumber");
            Integer todayVisitsNumber = (Integer) result.get("todayVisitsNumber");
            Integer thisWeekVisitsNumber = (Integer) result.get("thisWeekVisitsNumber");
            Integer thisMonthVisitsNumber = (Integer) result.get("thisMonthVisitsNumber");
            List<Map> hotSetmeal = (List<Map>) result.get("hotSetmeal");
            String filePath = req.getSession().getServletContext().getRealPath("template") + File.separator + "report_template.xlsx";
            //基于提供的Excel模板文件在内存中创建一个Excel表格对象
            XSSFWorkbook excel = new XSSFWorkbook(new FileInputStream(new File(filePath)));
            //读取第一个工作表
            XSSFSheet sheet = excel.getSheetAt(0);
            XSSFRow row = sheet.getRow(1);
            //日期
            row.getCell(1).setCellValue(reportDate);

            row = sheet.getRow(3);
            row.getCell(1).setCellValue(todayNewMember);//新增会员数（本日）
            row.getCell(3).setCellValue(totalMember);//总会员数

            row = sheet.getRow(4);
            row.getCell(1).setCellValue(thisWeekNewMember);//本周新增会员数
            row.getCell(3).setCellValue(thisMonthNewMember);//本月新增会员数

            row = sheet.getRow(6);
            row.getCell(1).setCellValue(todayOrderNumber);//今日预约数
            row.getCell(3).setCellValue(todayVisitsNumber);//今日到诊数

            row = sheet.getRow(7);
            row.getCell(1).setCellValue(thisWeekOrderNumber);//本周预约数
            row.getCell(3).setCellValue(thisWeekVisitsNumber);//本周到诊数

            row = sheet.getRow(8);
            row.getCell(1).setCellValue(thisMonthOrderNumber);//本月预约数
            row.getCell(3).setCellValue(thisMonthVisitsNumber);//本月到诊数

            //热门套餐
            int rowNum = 11;
            for (Map map : hotSetmeal) {
                String name = (String) map.get("name");
                Long setmeal_count = (Long) map.get("setmeal_count");
                BigDecimal proportion = (BigDecimal) map.get("proportion");
                row = sheet.getRow(rowNum++);
                row.getCell(0).setCellValue(name);//套餐名称
                row.getCell(1).setCellValue(setmeal_count);//预约数量
                row.getCell(2).setCellValue(proportion.doubleValue());//占比
                row.getCell(3).setCellValue("无");//备注
            }

            //使用输出流进行表格下载,基于浏览器作为客户端下载
            OutputStream out = resp.getOutputStream();
            resp.setContentType("application/vnd.ms-excel");//代表的是Excel文件类型
            resp.setHeader("content-Disposition", "attachment;filename=report-" + reportDate + ".xlsx");//指定以附件形式进行下载
            excel.write(out);

            out.flush();
            out.close();
            excel.close();

        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    //导出运营数据到pdf
    @RequestMapping("/exportBusinessReport4PDF")
    public void exportBusinessReport4PDF(HttpServletRequest req,HttpServletResponse resp){
        try{
            Map<String, Object> result = reportService.getBusinessReportData();
            String reportDate = (String) result.get("reportDate");

            //取出返回结果数据，准备将报表数据写到pdf文件中去
            List<Map> hotSetmeal = (List<Map>) result.get("hotSetmeal");

            //动态获取模板文件绝对路径
            String jrxmlPath = req.getSession().getServletContext().getRealPath("template") + File.separator + "health_business3.jrxml";
            String jasperPath = req.getSession().getServletContext().getRealPath("template") + File.separator + "health_business3.jasper";

            //编译模板
            JasperCompileManager.compileReportToFile(jrxmlPath,jasperPath);

            //填充数据
            JasperPrint jasperPrint = JasperFillManager.fillReport(jasperPath,result,new JRBeanCollectionDataSource(hotSetmeal));

            ServletOutputStream ops = resp.getOutputStream();
            resp.setContentType("application/pdf");
            resp.setHeader("content-Disposition","attachment;filename=report-" + reportDate + ".pdf");

            //输出文件
            JasperExportManager.exportReportToPdfStream(jasperPrint,ops);

        }catch (Exception e){
            e.printStackTrace();
        }
    }
}

